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misfire all cylinders >>>>> HELP! 850

Well, I took off the guard that covers the injectors and I sprayed brake cleaner around the intake manifold. I did not get a change in idle. I noticed that the top right bolt of the intake was missing. So, I concentrated spray in that area. I still did not get the idle to change.

I have visually inspected the vac lines and I can't find any holes.

I am wondering if my o2s are causing a rich mixture which is in turn fouling the plugs and giving me a misfire all cylinders.

I still need to check the pressure though. but I got to thinking. If it is a low pressure isn't that only going to show up when it is misfiring.

I need to pay more attention to when the mis is happening.






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